Elevator counterweight block and production method thereof

Abstract

The invention discloses an elevator counterweight block and a production method thereof. The counterweight block comprises a shell, a composite material filled in the shell, a metal mesh coated in the shell by the composite material as well as a cover plate fixedly connected with the shell. The composite material comprises the following raw materials in parts by weight: 50-80 parts of cement, 150-200 parts of hematite, 3-5 parts of a cement additive, 5-10 parts of an adhesive, 5-8 parts of an antifoaming agent, 3-5 parts of an anti-cracking agent, 3-5 parts of a water reducing agent, 5-8 parts of dense agent, 2-5 parts of a hardening agent, 1-3 parts of expansion coordination agent and 20-50 parts of water. According to the invention, the counterweight block is reasonable in design, the final compressive strength of the counterweight block is ensured to be greater than 30MPa, and the cost of the counterweight block is reduced on the premise that the performance of the counterweight block is not reduced; the composite material of the counterweight block is scientific in proportioning, and the specific gravity of the counterweight block reaches 3.6g / cm<3>; the counterweight block is compact in structure and excellent in strength and does not generate cracks after being used for a long time; and the size of a well is not changed, and meanwhile, the cost of the counterweight block is lowered.

Description

technical field [0001] The invention relates to a counterweight, in particular to an elevator counterweight of composite material and a production method thereof. Background technique [0002] With the high-speed development of modern cities, many high-rise buildings have sprung up, and elevators have become an indispensable vertical transportation equipment for high-rise buildings. [0003] The traction elevator is the most commonly used type of elevator. The counterweight is an indispensable part of the traction elevator, which can balance the weight of the car and part of the elevator load, and reduce the loss of motor power. [0004] Counterweights are usually made of cast iron. Due to high consumption, high pollution, and low efficiency, the cast iron industry has long been in the state of a low-end industry. Every traction elevator needs a counterweight, and the amount of counterweight used is very large. The traditional cast iron counterweight needs to be molded acco...

AI Technical Summary

Problems solved by technology

Every traction elevator needs counterweights, and the amount of counterweights used is very large. The traditional cast iron counterweights need to be molded according to their structure design. The cost of casting molds is high, which virtually increases the manufacturing cost of the elevator.

The casting process is more complicated. Due to some factors, the castings will have defects such as pores, slag inclusions, and cracks.

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